Exhibit 99.1

                    CERTIFICATION OF CHIEF EXECUTIVE OFFICER
                                   PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Gary S.  Kledzik,  certify,  pursuant to 18 U.S.C.  Section  1350, as adopted
pursuant to Section 906 of the  Sarbanes-Oxley  Act of 2002,  that the Quarterly
Report of  Miravant  Medical  Technologies  on Form 10-Q for the fiscal  quarter
ended  September 30, 2003 fully complies with the  requirements of Section 13(a)
or 15(d) of the Securities  Exchange Act of 1934 and that information  contained
in such Quarterly  Report on Form 10-Q fairly presents in all material  respects
the  financial   condition  and  results  of  operations  of  Miravant   Medical
Technologies.

                             By: /s/ Gary S. Kledzik
                             -----------------------
                             Name: Gary S. Kledzik
                             Title: Chief Executive Officer

                    CERTIFICATION OF CHIEF FINANCIAL OFFICER
                                   PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, John M.  Philpott,  certify,  pursuant to 18 U.S.C.  Section 1350, as adopted
pursuant to Section 906 of the  Sarbanes-Oxley  Act of 2002,  that the Quarterly
Report of  Miravant  Medical  Technologies  on Form 10-Q for the fiscal  quarter
ended  September 30, 2003 fully complies with the  requirements of Section 13(a)
or 15(d) of the Securities  Exchange Act of 1934 and that information  contained
in such Quarterly  Report on Form 10-Q fairly presents in all material  respects
the  financial   condition  and  results  of  operations  of  Miravant   Medical
Technologies.

                            By: /s/ John M. Philpott
                            ------------------------
                           Name: John M. Philpott
                           Title:Chief Financial Officer